🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`replygroupstack.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3036::6815:4c4c^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:bf1a^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.76.76^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.191.26^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`cass.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a51^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cass.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c051^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`cass.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2051^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`cass.ns.cloudflare.com`
		A	108.162.192.81^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cass.ns.cloudflare.com`
		A	172.64.32.81^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cass.ns.cloudflare.com`
		A	173.245.58.81^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`cass.ns.cloudflare.com`
NS	`valentin.ns.cloudflare.com`
		A	2606:4700:58::a29f:2cce^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`valentin.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3ce^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`valentin.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23ce^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`valentin.ns.cloudflare.com`
		A	108.162.195.206^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`valentin.ns.cloudflare.com`
		A	162.159.44.206^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`valentin.ns.cloudflare.com`
		A	172.64.35.206^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`valentin.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c17::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bl-in-f26.1e100.net`
		A	192.178.155.26^{🇺🇸 Google192.178.155.0/24}
			PTR	`yuiadrs-in-f26.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c14::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	192.178.234.26^{🇺🇸 Google192.178.0.0/15}
			PTR	`ncsclj-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1a^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f26.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1b^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f27.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
TXT	`google-site-verification=MG4dGLrrtceMe0Wr7KzsJPz3B6-Kj0fa82BZzAlyknY`
TXT	`v=spf1 include:_spf.google.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.76.76, 172.67.191.26
		IPv6 hints	2606:4700:3036::6815:4c4c, 2606:4700:3037::ac43:bf1a
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=71, name=cloudflare-ech.com
SOA	`cass.ns.cloudflare.com`dns@cloudflare.com serial=2418963564

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`v0n0.pir-ns.org` ⭐
	NS	`b2.org.afilias-nst.org` ⚠️ Not in zone NS records
	NS	`d0.org.afilias-nst.org` ⚠️ Not in zone NS records
	NS	`v0n1.pir-ns.org`
	NS	`v0n2.pir-ns.org`
	NS	`v0n3.pir-ns.org` ⚠️ Not in parent delegation
	NS	`v2n0.pir-ns.org` ⚠️ Not in parent delegation
	NS	`v2n1.pir-ns.org` ⚠️ Not in parent delegation
	SOA	`v0n0.pir-ns.org`hostmaster@donuts.email serial=1794444961

Same first word

replygroupstack.org

Similar names

replystackgroup.org

Previous names

Next names

DNS History

15 records (11 active, 4 former)

●NScass.ns.cloudflare.com2026-09-07 → 2026-11-12 · 2 obs

● 2026-09-07 15:38:40
● 2026-11-12 01:10:06

●NSvalentin.ns.cloudflare.com2026-09-07 → 2026-11-12 · 2 obs

● 2026-09-07 15:38:40
● 2026-11-12 01:10:06

●MXalt1.aspmx.l.google.com2026-09-07 → 2026-11-12 · 2 obs

● 2026-09-07 15:38:40
● 2026-11-12 01:10:06

●MXalt2.aspmx.l.google.com2026-09-07 → 2026-11-12 · 2 obs

● 2026-09-07 15:38:40
● 2026-11-12 01:10:06

●MXalt3.aspmx.l.google.com2026-09-07 → 2026-11-12 · 2 obs

● 2026-09-07 15:38:40
● 2026-11-12 01:10:06

●MXalt4.aspmx.l.google.com2026-09-07 → 2026-11-12 · 2 obs

● 2026-09-07 15:38:40
● 2026-11-12 01:10:06

●MXaspmx.l.google.com2026-09-07 → 2026-11-12 · 2 obs

● 2026-09-07 15:38:40
● 2026-11-12 01:10:06

●A104.21.76.762026-09-12 → 2026-11-12 · 3 obs

○ 2026-09-07 15:38:40
● 2026-09-12 14:03:26
● 2026-11-12 01:10:06

●A172.67.191.262026-09-12 → 2026-11-12 · 3 obs

○ 2026-09-07 15:38:40
● 2026-09-12 14:03:26
● 2026-11-12 01:10:06

○A188.114.96.02026-09-07 → 2026-09-07 · 3 obs

● 2026-09-07 15:38:40
○ 2026-09-12 14:03:26
○ 2026-11-12 01:10:06

○A188.114.97.02026-09-07 → 2026-09-07 · 3 obs

● 2026-09-07 15:38:40
○ 2026-09-12 14:03:26
○ 2026-11-12 01:10:06

●A2606:4700:3036::6815:4c4c2026-09-12 → 2026-11-12 · 3 obs

○ 2026-09-07 15:38:40
● 2026-09-12 14:03:26
● 2026-11-12 01:10:06

●A2606:4700:3037::ac43:bf1a2026-09-12 → 2026-11-12 · 3 obs

○ 2026-09-07 15:38:40
● 2026-09-12 14:03:26
● 2026-11-12 01:10:06

○A2a06:98c1:3120::2026-09-07 → 2026-09-07 · 3 obs

● 2026-09-07 15:38:40
○ 2026-09-12 14:03:26
○ 2026-11-12 01:10:06

○A2a06:98c1:3121::2026-09-07 → 2026-09-07 · 3 obs

● 2026-09-07 15:38:40
○ 2026-09-12 14:03:26
○ 2026-11-12 01:10:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b2.org.afilias-nst.org, v0n0.pir-ns.org, v0n2.pir-ns.org, v0n1.pir-ns.org...	-
replygroupstack.org	cass.ns.cloudflare.com, valentin.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.58.81

NS records: cass.ns.cloudflare.com, valentin.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for replygroupstack.org (unsigned zone)

⏱️ Timing

Total: 534ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.191.26, 104.21.76.76`
AAAA	2	`2606:4700:3036::6815:4c4c, 2606:4700:3037::ac43:bf1a`
NS	2	`cass.ns.cloudflare.com, valentin.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	2	`google-site-verification=MG4dGLrrtceMe0W, v=spf1 include:_spf.google.com ~all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`cass.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

replygroupstack.org points to the four IP addresses 104.21.76.76, 172.67.191.26, 2606:4700:3036::6815:4c4c and 2606:4700:3037::ac43:bf1a.

insightaro.com, tgnetworks.lv, staddlestonesbandb.co.uk plus two other host names have IP numbers in common with replygroupstack.org.

Name Servers

Two name servers handle the delegation for replygroupstack.org: cass.ns.cloudflare.com and valentin.ns.cloudflare.com.

The name server configuration of replygroupstack.org is shared with other domains, for instance drivereplynexus.org, eligt0ieqxr-q7hp.workers.dev, apexcertified.com and two others.

There is at least partial name server overlap between replygroupstack.org and other domains — firman-fandi.workers.dev, aibxn0xm.com, marsbahis5691.com and two more among them.

The name servers heidi.ns.cloudflare.com, meadow.ns.cloudflare.com and aragorn.ns.cloudflare.com are often found in combination with these name servers.

Hosts with 6 IP addresses each:

cass.ns.cloudflare.com resolves to 108.162.192.81, 172.64.32.81 and 173.245.58.81 among others, with 3 other IP addresses in total.

valentin.ns.cloudflare.com resolves to 108.162.195.206, 162.159.44.206 and 172.64.35.206 among others, with 3 other IP addresses in total.

Mail Servers

replygroupstack.org has five mail servers, which are aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

At least some of the mail servers used by replygroupstack.org are shared with other domains: kitchensplusinteriors.com, yourpetpartner.com, dannssweetshop.com and two others among them.

These mail servers often appear in conjunction with the mail servers alt4.aspmx.l.google.com, alt3.aspmx.l.google.com, aspmx3.googlemail.com and aspmx2.googlemail.com.

Host names pointing to two IP addresses:

aspmx.l.google.com resolves to two addresses: 192.178.155.26 and 2607:f8b0:4004:c17::1a.

alt1.aspmx.l.google.com resolves to two addresses: 192.178.234.26 and 2800:3f0:4003:c14::1a.

alt2.aspmx.l.google.com resolves to two addresses: 172.253.116.26 and 2a00:1450:400b:c02::1a.

alt3.aspmx.l.google.com resolves to two addresses: 192.178.223.27 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com resolves to two addresses: 172.253.157.26 and 2a00:1450:400c:c23::1b.